Antibiotic resistant group A streptococci. I. Acquired in vitro resistance to penicillin, mitomycin C. tetracycline and streptomycin.
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D066298:In Vitro Techniques; D009154:Mutation; D013297:Streptococcus pyogenes / Q000378:metabolism*
D000900:Anti-Bacterial Agents